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Finding the Third Proportional to 75,621 and 164,578

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Solution

The third proportional to 75,621 and 164,578 is: 358,179.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,621 : 164,578 = 164,578 : x
  2. Step 2: Convert to fraction form
    75,621/164,578 = 164,578/x
  3. Step 3: Cross multiply
    75,621x = 164,578 × 164,578
  4. Step 4: Simplify right side
    75,621x = 27,085,918,084
  5. Step 5: Solve for x
    x = 27,085,918,084/75,621
  6. Step 6: Final answer
    x = 358,179.85

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.